Performance Analysis of a New Multi-Code High-Speed Mobile Radio Transmission Scheme Using Cyclic Modified M-Sequence
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概要
- 論文の詳細を見る
This paper proposes a new parallel high speed mobile radio transmission scheme using cyclic-shifted-codes generated from a modified M-sequence. The modified M-sequence is biased with constant direct current(dc)on an M-sequence and is inserted the guard chips before and after this biased M-sequence. The proposed system has the following features: i)Orthogonality of the codes is kept not only between direct waves of each parallel channels but also between direct and delayed waves within the guard chips; ii)It is possible to reduce the number of kinds of codes allocated to one user; and iii)It is easy to recover both code and chip timings. In this paper, moreover, the performance of the proposed system was evaluated in terms of bit error rate(BER) under additive white Gaussian noise(AWGN), non-selective one path Rayleigh fading and double-spike Rayleigh fading channels. As a result, the proposed transmission scheme can transmit several Mbps in a high-speed double-spike Rayleigh fading channel with better quality in comparison with a conventional multicode CDM transmission scheme based on M-sequences.
- 社団法人電子情報通信学会の論文
- 2000-09-25
著者
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Harada Hiroshi
Communications Research Laboratory Independent Administrative Institution
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Harada Hiroshi
Communications Research Laboratory Ministry Of Posts And Telecommunications Japan
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